Among individuals with 1–5 years of recovery, OPI were more likely to endorse lifetime utilization of formal treatment services (χ2=8.60, p=0.0034), mutual-help services (χ2=8.99, p=0.0027), recovery support services (χ2=3.84, p=0.05), and pharmacotherapy (i.e. MAT; χ2=10.09, p=0.0015), relative to ALC (horizontal bar and asterisk reflect P≤0.05 across all services). Lifetime use of these services did not significantly differ between OPI and ALC in the first year of recovery (all p’s > 0.05). Error bars depict standard error.